The molar heat capacity of oxygen gas at STP is nearly text2.5R . As the temperature is increased, it gradually increases and approaches text3.5R . The most appropriate reason for this behaviour is that at high temperature

Question

The molar heat capacity of oxygen gas at STP is nearly text2.5R . As the temperature is increased, it gradually increases and approaches text3.5R . The most appropriate reason for this behaviour is that at high temperature (A) oxygen does not behave as an ideal gas (B) oxygen molecules dissociate into atoms (C) the molecules collide more frequently (D) molecular vibrations gradually become effective

Tardigrade Admin · Accepted Answer

The molar heat capacity depends upon the degree of freedom. At low temperature, only translatory degree of freedom is present. At high temperature all types of degrees of freedom (translatory, rotatory and vibratory) are present.

Q. The molar heat capacity of oxygen gas at STP is nearly 2.5R . As the temperature is increased, it gradually increases and approaches 3.5R . The most appropriate reason for this behaviour is that at high temperature

oxygen does not behave as an ideal gas

oxygen molecules dissociate into atoms

the molecules collide more frequently

molecular vibrations gradually become effective

The molar heat capacity depends upon the degree of freedom. At low temperature, only translatory degree of freedom is present. At high temperature all types of degrees of freedom (translatory, rotatory and vibratory) are present.

Q. The molar heat capacity of oxygen gas at $STP$ is nearly $2.5 R$ . As the temperature is increased, it gradually increases and approaches $3.5 R$ . The most appropriate reason for this behaviour is that at high temperature